HackingFinancial ServicesFinanceStolen CredentialsData ExfiltratedCustomer Data InvolvedTargetedIdentity (basic)Government IDFinancial accountMediumContained

LPL FINANCIAL LLC

bd_23641c5817d6e663 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Dec 1, 2025

Filed

Jul 6, 2026

To disclose

31 weeks

Affected

2state residents only

Linked

5 filings

Confidence

66%

Full breach record for LPL FINANCIAL LLC →37 incidents on file

LPL Financial LLC notified the New Hampshire Attorney General of a cybersecurity incident affecting 2 NH residents. Unauthorized access to an advisor's portal account occurred starting October 26, 2025, via a malicious script. Personal data exposed included names, SSNs, account numbers, and contact info. LPL contained the breach, worked with law enforcement, and offered 24 months of credit monitoring to affected individuals. Notification was sent June 29, 2026.

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Leak gap clock✗ Leak >180d31 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 36 days

discovery → filing · 31 weeks / 217 days

Oct 26, 2025

Begins

Dec 1, 2025

Discovered

Jul 6, 2026

Filed

vs. sector median

+23 wks slower

This filing is one of 5 about the same incident.View merged incident

A leak claim by cephalus about this victim predates this filing by 313 days.View originating leak claim

Linked disclosures

Why this link?

Regulatory filings (4) · sorted by filing gap

New Hampshire State AGbd_941f183dd20500152026-05-20 · +47dVerified by operator
New Hampshire State AGbd_a770fe6ece79659a2026-04-27 · +70dVerified
Massachusetts State AGbd_a8353a63355898c82026-04-22 · +75dVerified
Maine State AGbd_df923b8f910900012026-04-22 · +75dVerified

Name: LPL FINANCIAL LLC
norm: lpl financial
Domain: lplfinancial.com

Name: LPL FINANCIAL LLC
norm: lpl financial
Domain: lplfinancial.com
Industry: Financial Servicesllm

Discovered: Dec 1, 2025
Breach occurred: Oct 26, 2025
Undetected for: 36 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jun 29, 2026
Affected individuals: 2state-resident count only
Data types: Identity (basic)Government IDFinancial account
Data elements: Social Security numberDate of birth
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1190 Exploit Public-Facing Application
Threat actor: ExternalFinancial
Regulator citations: working with law enforcement regarding the investigation
Initial access: valid_credentials

During the incident: Commenced an internal investigation
Implemented containment measures
Disabled the advisor's portal access
Restricted client accounts associated with the advisor
Reviewed relevant account activity
Conducted a forensic review of the advisor's workstation
Restored portal access on December 16, 2025
Working with law enforcement regarding the investigation
Rotated credentials
Implemented additional technical measures
Changes made: Offering all individuals whose personal information was or is reasonably believed to have been viewable or acquired two years of credit monitoring and identity protection services
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 31 weeks(217 days from discovery to filing)
Compliance flags: Leak >180d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 5 filings · 3 states

View merged incident ↗

Massachusetts State AGApr 22 · first

Maine State AGApr 22 · first

New Hampshire State AG+5d

New Hampshire State AG+28d

New Hampshire State AG+75d · this page

Pattern: first filing Apr 22 (MA), last Jul 6 (NH) — a 75-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://mm.nh.gov/files/uploads/doj/remote-docs/lpl-financial-20260706.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jul 6, 2026
Raw hash: b37e2ab8273a1eec1729a1f2aa6caf5331b36771452546635f1d465e98b2f41e

Linked disclosures

Regulatory filings (4) · sorted by filing gap

Reporting entityLPL FINANCIAL LLC

Victim entityLPL FINANCIAL LLC

Incidentdiscovered Dec 1, 2025

Stated responseCommenced an internal investigation

ComplianceLeak >180d

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov